Compare entry door materials alongside the configuration you need. Steel provides a smooth finish and strong door surface, while fiberglass offers smooth or woodgrain appearances with resistance to moisture and everyday exposure.
Both materials can be used with insulated cores and a choice of glass, finishes, and hardware. Energy performance depends on the complete door system, including the glass package, frame, weatherstripping, and installation. Compare your preferred style, maintenance needs, budget, and opening size before selecting a material.